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All-optical flexible 5G signal generation and transmission for spectrum resource optimization
Journal of the Optical Society of America B ( IF 1.9 ) Pub Date : 2020-09-17 , DOI: 10.1364/josab.402483
Reinhard Karembera , Shukree Wassin , George Isoe , Ketshabile Nfanyana , Tim Gibbon

As available spectrum gets congested by different applications, spectral efficiency can be enhanced through spectrum sharing and coexistence. In this paper, we demonstrate the idea of spectrum sharing and coexistence by using optical heterodyning as a flex-spectrum photonic RF transmitter. Flexibility was achieved by tuning the RF carrier frequency from 1–5 GHz, frequencies around two spectra from a commercial telecom antenna and from a radio astronomy observatory area. We compared the spectrum of our adopted flex-spectrum photonic RF transmitter with these two practical spectra. This allowed us to demonstrate the feasibility of our adopted photonic RF transmitter to coexist with these distinct spectra. Results indicated that it is feasible to use these adopted photonic transmitters in different application environments for coexistence and spectrum sharing. Error-free 26 km fiber transmission was achieved at 2.1 Gbps and 8.5 Gbps. This further showed the feasibility of these photonic RF transmitters for controlled transfer of different data signals relating to different applications using the same RF channel.

中文翻译:

全光灵活的5G信号生成和传输,可优化频谱资源

随着可用频谱因不同应用而变得拥挤,可以通过频谱共享和共存来提高频谱效率。在本文中,我们通过使用光学外差技术作为柔性光谱光子RF发射器来演示频谱共享和共存的想法。通过调整1–5 GHz的RF载波频率,商用电信天线和射电天文观测区的两个频谱附近的频率来实现灵活性。我们将采用的柔性光谱光子RF发射器的光谱与这两个实际光谱进行了比较。这使我们能够证明我们采用的光子RF发射器与这些不同光谱共存的可行性。结果表明,在不同的应用环境中使用这些采用的光子发射器实现共存和频谱共享是可行的。在2.1 Gbps和8.5 Gbps下实现了26 km的无错光纤传输。这进一步表明了这些光子RF发射器用于控制传输与使用同一RF通道的不同应用有关的不同数据信号的可行性。
更新日期:2020-10-30
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